Letter | Published:

Evidence of a Penetrating Radiation from Thunderstorms

Nature volume 130, page 399 (10 September 1932) | Download Citation



WE have recently carried out experiments which suggest that a penetrating radiation is emitted by charged thunderclouds. In the arrangement used, one pen of an electric chronograph was actuated by a Geiger-Müller counter, another pen by a chronometer marking half-seconds, and a third by the atmospherics received from lightning flashes on a two-valve amplifier. The records have been examined to see whether the kicks of the counter and the flashes showed any significant time relations.

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    , Proc. Roy. Soc., A, 130, 37; 1930.

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  1. University of Cape Town, July 20.

    • B. F. J. SCHONLAND
    •  & J. P. T. VILJOEN


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